Casio EA-100 Bedienungsanleitung PDF herunterladen (Seite 4)

Clemson Biology Project

Appendix 2

EA100-4

DATA LOGGER

 For this example we will collect 10 samples of light intensity data using the

light sensor probe, collecting a sample every 5 seconds. Thus the sampling

rate for this example is 5 seconds and the number of samples is 10. We will

use Channel 1 (CH1) as the port for connecting the light sensor probe.

 With the EA100 turned off, plug in the probe you wish to use for data

collection. For this example we are using the light sensor probe in CH1, so

plug the white connector into the CH1 port. It is very important that the

EA100 be OFF when you plug in the probes since attached devices are only

recognized by the EA100 when it is initially turned on.

 Turn the EA100 on by pressing the red [ON/OFF] key. When the EA100 is

first turned on, it is in communications mode. You need to set up the EA100

to receive data whenever you turn it on. To receive data with respect to time,

you will use the Data Logger. Press [SHIFT] [MODE] to enter the set up area

for the Data Log. On the left side of the screen you will see “READY

SAMPLING DONE” blinking and on the right side of the screen you will see

a large numeric display followed by a very small time unit, such as seconds or

milliseconds.

 At this screen you will choose the sample rate. The sample rate is the amount

of time you want to elapse between each data item collected. Your choices are

1.00 Sec, 2.00 Sec, 5.00 Sec, 10.0 Sec, 20.0 Sec, 30.0 Sec, 60.0 Sec, .000 Sec,

10.0 Msec, 20.0 Msec, 50.0 Msec, 100 Msec, 200 Msec, and 500 Msec. You

can view each of these choices by pressing the [DataLOG] key (which

actually serves as the [NEXT] key when you are in Data Log mode). When

you determine which of the sample rates you prefer, simply press [TRIGGER]

(which serves as the [ENTER] key when you are in Data Log mode). For this

example we are using 5.0 Sec, so as you press the [DataLOG] key, watch the

screen for 5.0. When you see it, press [TRIGGER].

 Once you have pressed [TRIGGER] to enter your choice, the EA100

automatically enters your choice for sample rate and moves directly to the

“number of samples” area. The number of samples is simply how many

samples of data you want to collect. For this example, we are collecting 10

samples, 1 sample every 5 seconds. You would want to choose 10 while in

this area. The choices for number of samples is 10, 20, 30, 50, 100, and 200.

You can view these by pressing the [DataLOG] key and you enter your choice

by pressing the [TRIGGER] key. So as you press [DataLOG], look for 10 on

the screen, and press [TRIGGER] when you see it to enter this choice.

 Once you press [TRIGGER] to enter your choice for number of samples, the

EA100 automatically takes you to the “time definition” area. There are three

choices in this area, and again, you can view these choices by pressing the

[DataLOG] key and you enter your choice by pressing the [TRIGGER] key.

The three choices are 0, 1, 2. The 0 turns the time recording off. The 0 is

rarely used. The 1 means absolute time, indicating that time will be transferred

as a list of numbers counting from 0 up to the number of seconds or milli-

seconds elapsed for the duration of the sampling, in increments of whatever

rate you chose. The 1 is the choice used most often. The 2 is rarely used. It

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